Can closure



Dec. 8, 1925. 1,564,958

- E. HILDEBRANDT ET AL CAN CLOSURE Filed Dec. 27; 1923' Ill lllll gyvueniw Edward Hf/debr'anaf Nara/d hifaebmn d in Can Closures,* f which the following is a with.

atented Dec. 2, i225.

- intense EDWARD iHILDEBEANDT Al llD HAROLD HTLDEBRANDT, 0F TACOMA, WASHINGTON.

CAN GLOSUR-E.

Application filed December 27, 1923 Serial Ho. 682,967,

To all whom it may concern:

Be it known that we, EDWARD HILDE- BRANDT and HAROLD HiLonBnANn'r, citizens of the United States'of America, and residents of the city of Tacoma, in the county of Pierce and State 'of- Wgshington, have invented certain new.' and usefullmprovements specification.

Our invention relatesto a can. andto a top therefor, particularly a top which'is frie tionally yet securely held in place thereon and preferably one which has incorporated in it and cooperating with the can itself means for showing at a. glance whether or not the can has been opened or tampered One object of'our invention is to provide a can with a frictional closure for'one end, which frictional closure can be tightly and semi-permanently secured in place, and which is adapted then to have. its other end closed by a.closure which may be seamed into place after the frictional cap has been put on and thecontents placed within the can. i A second object is the provision of a canhaving a frictional closure and having means associated therewith but not unduly noticeable from the exterior of the can nor projecting therefrom, which will permit the frictional cap to belifted easily.

Still another object is to provide means which may beformed as a part of the cap and cut fromthe same blank, and which will not project from the general confines thereot,'and which will [serve as a telltale to show if the cap has been removed after having been originally put into place.

()ur invention comprises those novelparts and combinations thereof which are shown 1 in the accompanying drawings, described in the specification and particularly defined by the claim terminatin the same.

In the accompanying drawings We have shown our invention in forms which are now preferred by us.

Figure 1 is a side elevation of acan em l odying the preferred form of our invention.

Figure 2 is a detail section through an edge of the ean'and its upper cap. 1

Figure 3 is a section similar to Figure 2, showing a modified form.

The can body 1 may be of any suitable shape or size. One end, which is designed Adjacent the upper end to be the lower end, is formed as is customary wlth cans to receive abottom cap 3 which lsadapted to be secured to the bottom end of the can body 1 by a seamed joint,

as indicated at 31 as is now common in the art. This seamed oint may be-made, and

preferably would be made, after the can has received its contents.

groove lOfis cri'mped into the body. ref

.erably this projects into the interior of the can; thus to leave an upwardly directed ledge 11 formingone side of the groove -10, and a downwardly directed*'ledgell2 closer to the 7 upper end of the body 1 and forming the..-

upper side of the groove 10. The upper edge ofthe body 1 may be formed with a bead 13, if desired, this being preferably inwardly turned, although this is morev amatter of convenience and preference than of necessity. lntheform shown in Figure 3 the bead is outwardly turned as is the groove 10'.

A friction cap 2 is formed to cooperate with the upper edge of the can body 1 insuch manner as to secure it firmly in place thereon. It is shown as' provided with a downwardly opening peripheral groove 21 and having a vperipheral flange 22.

not parallel to the flange 22,but, one or the other of these sides is inclined relative to the axis of the can to cause the sides 22 and 23 to converge downwardly. In the preferred form shown in Figures 1 and 2 the side 28 is inclined and in Figure 3 the flange 22 is inclined. This is for the purpose of forming an inclined connection between the bead 13 and this inclined side of the groove.

this means the cap 2 is caused to fit snugly to the end of the body 1 and the bead 13 is caused to be forced toward the bottom of the groove 21. Preferably a gasket 4 of plastic sealing material such as is commonly used in the seams of cans is employed be- 10 ing ledge 11 or 11, associated with the'peripheral groove 10 in the can body. By prying with the coin or knife the flange 22 and 1 the cap 2 is easily forced upward, breaking the seal at 4. In the form shown in Figures of the bod 1 a 65 The inner side 23 of the groove 21 is preferably 85 the cap a coin, knife, or 10 1 and 2 the lower edge of the flange 22 must normally be positioned between the shoulders .11 and 12, and in the form shown in .Figure 3 it must be between the shoulder 11 and the lower side of the outwardly turned bead 13, which itself forms a downwardly facing shoulder.

We provide means whereb it may be ascertained at a glance whet 1er or not the cap 2 has been removed. As is best shown in Figure 1 this comprises a telltale lug 25 which is formed in the flange 22 by cutting the flange at two adjacent points to define the edges of the lug'25. Figure 1 shows notches 26 out out of the metal of the flange 22, these definingthe lug 25. By so form- 1 ing the lug itsvl'ower edge does not project be ow the lower edge of the flange 22. This insures that the lugs will not be accidentally broken off, either before or after placing upon the can body, and insures. that the vcaps, if handled by machinery, will slide readily and will not have members projecting beyond their general or catch on other parts. I,

The lug 25, after the cap 2 has been pressed into place, is bent sharply beneath the downwardly facing shoulder 12, in the formshown in Figures 1 and 2, and beneath the lower side of the bead 13 in the form plane to interfere shown in Figure 3. 'In this manner any lar materials, as, for example, coffee, and

permits the material to be kept tightly sealed to be filled and handled by the customary filling and sea ing machines, and

yet permits the use of a riction cap so that the materials within the can may be reached from time to time and yet kept well covered.

lVhat We claim as our invention is:

A can having a downwardly directed ledge and'an adjacent upwardly directed ledge near one end, a flanged friction cap fittlng upon this end, the edge of the cap fian'ge having a pair of adjacent cuts defining a lug whose edge is substantially c0ntinuous with the flange edge, said flange edge, when the cap is in place, lying between said ledges, and the lug being bent beneath the downwardly directed ledge.

Signed at Tacoma, Pierce County, lVashington this 21st day of December 1923.

ED /VARD HILDEBRANDT. HAROLD HILDEBRANDT. 

